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Effective Hamiltonian for. delta. S=1 weak nonleptonic decays in the six-quark model

Journal Article · · Phys. Rev., D; (United States)
Strong-interaction corrections to the nonleptonic weak-interaction Hamiltonian are calculated in the leading-logarithmic approximation using quantum chromodynamics. Starting with a six-quark theory, the W boson, t quark, b quark, and c quark are successively considered as ''heavy'' and the effective Hamiltonian is calculated. The resulting effective Hamiltonian for strangeness-changing nonleptonic decays involves u, d, and s quarks and has possible CP-violating pieces both in the usual (V-A) x (V-A) terms and in induced, ''penguin''-type terms. Numerically, the CP-violating compared to CP-conserving parts of the latter terms are close to results calculated on the basis of the lowest-order ''penguin'' diagram.
Research Organization:
Stanford Linear Accelerator Center, Stanford University, Stanford, California 94305
OSTI ID:
5884448
Journal Information:
Phys. Rev., D; (United States), Journal Name: Phys. Rev., D; (United States) Vol. 20:9; ISSN PRVDA
Country of Publication:
United States
Language:
English